Stenocarpus 
PROTEACEAE 127 
STENOCARPUS R.Br. 
Trees. Young growth rusty pubescent. Inflorescences terminal or in upper axils, umbellate. Flowers 
zygomorphic. Hypogynous glands united in a horseshoe-shaped nectary. Ovary stipitate; ovules numerous; 
style long and dilated apically into an oblique pollen presenter. Fruit a follicle; seeds with an outer 
membranous wing folded around the inner wing. 
A genus of 25 species from Malaysia, New Caledonia to Australia; 8 species in Australia; 3 in the NT, 2 in 
the DR. All NT species are described here. 
1. — Leaves discolorous, glossy abOVE .......:sssssesesereeteeeeee 
1. Leaves concolorous, dull above 
2.  Perianth yellow, 4-5 mm Jong ........cseeeseeseeeeteeseeneeeee 
a. Perianth white, 8-15 mm long .......cceeeeseesseseseseeeeees 
S. acacioides F.Muell. 
S. cunninghamii R.Br., misapplied name 
Tree to 12 m; bark black, fissured. New buds rusty 
tomentose; plants otherwise glabrous. Petioles 5-20 
mm long. Leaf blades concolorous, dull, coriaceous; 
juveniles entire, deltoid or ovate, 73-120 mm long, 
57-111 mm wide, L/W 1-1.5, grading into adult leaves; 
adults elliptic or narrowly elliptic, 45-115 mm long, 
7-30 mm wide, L/W 3-8, main longitudinal veins 
4-8, secondary venation obscure, bases long- 
attenuate, apices acute or obtuse. Umbels of 19-22 
flowers; peduncles 7-35 mm long; pedicels 6-10 mm 
long. Perianth white, 8-15 mm long. Fruit woody, 
linear, 55-150 mm long. Seeds not seen. Flowering: 
Apr - Oct; fruiting: Nov - May. Fig. 37 
Distributed from the Kimberley eastward across 
the Top End north of 16° S. Of scattered occurrence 
Stenocarpus 
juvenile 
S. cunninghamii 
S. ‘Top End’ 
2 
S. cunninghamii 
S. acacioides 
in the DR, usually on skeletal soils in Eucalypt 
woodland; rarely in monsoon thickets. Typically 
reproducing by suckers and not often seen as adults. 
S. cunninghamii R.Br. 
Tree to 10 m; bark dark grey, flaky and rough. 
New growth rusty tomentose, soon becoming 
glabrous. Petioles 4-7 mm long. Leaf blades 
concolorous, dull, coriaceous; juveniles elliptic or 
ovate in outline, simply lobed to deeply bipinnately 
lobed, lobes linear; adults oblanceolate, narrowly 
oblanceolate or narrowly elliptic, straight or falcate, 
25-110 mm long, 4-18 mm wide, L/W 3-12, venation 
faint with 3-5 longitudinal veins, base attenuate, 
apex acute or obtuse, mucronate. Umbels of 14-21 
flowers; peduncles 3-19 mm long, pedicels 4-5 mm 
juvenile 
S. ‘Top End’ 
Fig. 37 
